Capture every run. Inspect every decision. Pause and inject live. Fork from any step. Diff the trajectories. Meterbility turns agent runs into a queryable, replayable, forkable corpus.
$npm install -g @meterbility/cliWorks with · Claude Code, Codex CLI, Cursor, Anthropic + OpenAI proxies, TypeScript & Python SDKs
You already know how to debug a web page. Meterbility gives your agents the same panels — all shipping today.
/contexts/:id.meter inspect walks every decision; meter fork branches a new trajectory from any step.meter probe or the web panel.meter diff compares two runs step-by-step and pinpoints exactly where behavior diverged.Everything runs on your machine: SQLite plus content-addressed blobs. Add Postgres when you need multi-machine sync.
Claude Code JSONL hooks, Codex CLI & Desktop, Cursor composer, and Anthropic/OpenAI proxies via meter proxy.
What tool-call inspection can't see — sed, mv, build scripts — lands as file-change rows via hooks or the FileSentinel.
Deterministic prefix replay with a live suffix. Continue with --continue simulate|live for multi-step what-ifs.
Promote a good run to a canonical, add assertions, and catch behavioral drift with meter test.
@meterbility/agent for TypeScript and meterbility-agent for Python (stdlib-only). One-line Anthropic tracing.
Edits to .env, keys, and credential stores record the fact of the change — path, op, size — never the contents.
The full single-operator product is MIT-licensed, forever. Paid tiers add multi-tenant fleet orchestration and the hosted cloud.
MIT license
$0
free forever, run it anywhere
Elastic License 2.0 (ee/)
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MIT-licensed core, permissive dependencies only, and a fresh-laptop test script that proves the install path on every CI run.